CVE-2026-53220
CSIRTS triage
- What
- The netfilter subsystem requires revalidation of bridge ports.
- Who is affected
- Deployments using netfilter with bridge ports are affected.
- Urgency
- Medium urgency as it could lead to issues, but no active exploitation is reported.
- Action
- Monitor for updates and apply patches when released.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2026-53220: netfilter: revalidate bridge portsmsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-53220)